Smoke Tree (Cotinus coggygria ‘Black Velvet’) Posted on April 11, 2012 by Lucile Whitman Deep purple leaves; precocious flowering with smoky flrs; the tree can reach 20′; tolerant of most soils, the fall color will knock you over. Size: Graft Price: $19.00 Size: 1 gallon Price: $30.00 Size: Filed grown Price: $115.00